package com.tedu.day02.oop;

/**
 * instanceof关键字---继承---多态---判断类是否为造型
 */
class Name{}
class ReName extends Name{}
public class Instanceof关键字 {
    public static void main(String[] args) {
        Name name=new Name();
        System.out.println(name instanceof Name);//true
        System.out.println(name instanceof ReName);//false

        //继承--创建出来--关系---向上造型
         Name a=new ReName();
         System.out.println(a instanceof Name);//true
         System.out.println(a instanceof ReName);//true
    }
}
